{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["enabling technology", "process characterization", "concept or principle", "application", "biomedical", "machanical property"], "input": "The experimental results showed that UPT in three directions applied to each weld right after arc extinguishing has a minor influence on the surface appearance , which shows no apparent plastic deformation , but has a great improvement in grain refinement ."}
{"enabling technology": [], "process characterization": ["grain refinement"], "concept or principle": ["experimental", "arc", "surface"], "application": [], "biomedical": [], "machanical property": ["plastic deformation"]}